TECHNICAL GUIDE MODELS: P4HU 80 AFUE MULTI-POSITION GAS-FIRED FURNACES DESCRIPTION. WARRANTY 20-year limited warranty on the heat exchanger.

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1 Rev. A (4/00) DESCRIPTION These high efficiency, compact units employ induced combustion, reliable hot surface ignition and high heat transfer aluminized tubular heat exchangers. The units are factory shipped for installation in upflow or horizontal applications. TECHNICAL GUIDE 80 AFUE MULTI-POSITION GAS-FIRED FURNACES MBH OUTPUT HIGH-EFFICIENCY INDUCED COMBUSTION MODELS: P4HU These furnaces are designed for residential installation in a basement, closet, alcove, attic, recreation room or garage and are also ideal for commercial applications. All units are factory assembled, wired and tested to assure safe dependable and economical installation and operation. These units are Category I listed and may be common vented with another gas appliance as allowed by the National Fuel Gas Code. WARRANTY 20-year limited warranty on the heat exchanger. 10-year heat exchanger warranty on commercial applications. 5-year limited parts warranty. FEATURES Easily applied in upflow, horizontal left or horizontal right installation with no conversion necessary 100% shut off main gas valve for added safety Rollout safety control Low unit amp requirement for easy application High quality inducer motor for quiet operation Built-in self diagnostics with fault code display Diamond Tough hot surface igniter High velocity filter provided for field installation Standard terminals for controlling humidifiers and EAC's 40 VA control transformer fuse protected Easy to connect power and control wiring Efficiency ratings of 80 AFUE attained by using tubular heat exchangers Cooling relay supplied for easy installation of add-on cooling Multi-speed PSC, direct-drive blower motors to match cooling requirements Adjustable fan-off settings to eliminate cold-blow Compact 40-in height allows installation in small space confines Lo NOx models have been designed to meet specific code requirements. Lo NOx units may not be converted to propane. FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

2 Rev. A (4/00) YORK D B 3/4 20 (Vent Connection) 13-3/4 POWER WIRING 7/8" HOLE 5-3/8 14-3/4 2-1/2 40 GAS INLET 1-1/4" X 2-1/2" ACCESS WIRING 7/8" K.O. 2 OPTIONAL SIDE RETURN CUT-OUT (EITHER SIDE) 8-3/ / /2 2-1/4 1-1/8 FRONT A 28-1/2 LEFT SIDE T'STAT WIRING 7/8" K.O. RIGHT SIDE 20 B Vent Connection (vent size) D E TOP IMAGE (FRONT) F 28-1/2 23 A C (WITHK.O. REMOVED) BOTTOMIMAGE (FRONT) 3/4" FLANGE All dimensions are in inches, and are approximate. MODEL * A B C D E F P4HUA12N /2 13-1/4 10-1/ /8 3-3/4 P4HUA12N /2 13-1/4 10-1/ /8 3-3/4 P4HUA12N /2 13-1/4 10-1/ /8 3-3/4 P4HUB16N /2 16-1/4 13-1/ /8 3-3/4 P4HUC20N /4 16-5/ /8 3-3/4 P4HUB12N /2 16-1/4 13-1/ /8 3-3/4 P4HUB16N /2 16-1/4 13-1/ /8 3-3/4 P4HUC20N /4 16-5/ /8 3-3/4 P4HUC16N /4 16-5/ /8 3-3/4 P4HUC20N /4 16-5/ /8 3-3/4 P4HUD20N /2 23-1/4 20-1/ /8 3-3/4 *. L in model number indicates Lo NOx unit RATINGS & PHYSICAL / ELECTRICAL DATA MODEL * INPUT MBH OUTPUT MBH AFUE AIR TEMP RISE F MAX OUTLET TEMP F BLOWER HP AMPS SIZE TOTAL UNIT AMPS MAX OVER- CURRENT PROTECT. MIN. WIRE SIZE 75 FT. ONE WAY P4HUA12N / x P4HUA12N / x P4HUA12N / x P4HUB16N / x P4HUC20N x P4HUB12N / x P4HUB16N / x P4HUC20N x P4HUC16N / x P4HUC20N x P4HUD20N x *. L in model designator indicates factory built Lo Nox units.. AFUE numbers are determined in accordance with DOE test procedures.. Wire size and overcurrent protection must comply with the National Electrical Code (NFPA-70-latest edition) For altitudes above 2,000 ft., reduce capacity 4% for each 1,000 ft. above sea level. Wire size based on copper conductors, 60 C, 3% voltage drop. Continuous return air temperature must not be below 55 F. OPER. WGT. (LBS) 2 Unitary Products Group

3 YORK Rev. A (4/00) BLOWER PERFORMANCE CFM - UPFLOW/HORIZONTAL (WITHOUT FILTER) Note: Data below reflects airflows with single return opening, either left or right side or bottom MODELS P*HU/G8T-UH/ L8T-UH * 40 / 32 / 1200 / "A" 60 / 48 / 1200 / "A" 80 / 64 / 1200 / "A" 100 / 80 / 1200 / "B" SPEED TAP EXTERNAL STATIC PRESSURE, INCHES W.C HIGH MED-HIGH MED-LOW LOW HIGH MED LOW / 64 / 1600 / "B" MED HIGH LOW / 80 / 1600 / "B" MED HIGH LOW / 92 / 1600 / "C" 80 / 64 / 2000 / "C" 100 / 80 / 2000 / "C" 115 / 92 / 2000 / "C" HIGH MED LOW HIGH MED LOW / 104 / 2000 / "D" MED HIGH LOW NOTE: Data below reflects airflows with two return openings - two sides or one side and bottom. 80 / 64 / 2000 / "C" HIGH / 80 / 2000 / "C" MED / 92 / 2000 / "C" LOW / 104 / 2000 / "D" MED HIGH LOW *. Input / Output / CFM / Cabinet Width (A=14-1/2, B=17-1/2, C=21, D=24-1/2) NOTES: Airflow is expressed in standard cubic feet per minute. Motor voltage at 115V. Indicates model available in LoNox. Unitary Products Group 3

4 Rev. A (4/00) YORK FILTER PERFORMANCE The airflow capacity data published in the Blower Performance Tables represents blower performance WITHOUT filters. To determine the approximate blower performance of the system, apply the filter drop value for the filter being used or select an appropriate value from the Table. NOTE: The filter pressure drop values in the Table below are typical values for the type of filter listed and should only be used as a guideline. Actual pressure drop ratings for each filter type vary between filter manufacturer. FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. Airflow Range Minimum Opening Size (in. 2 ) Filter Type Disposable Hogs Hair * Pleated 1 Opening 2 Openings 1 Opening 2 Openings 1 Opening 2 Openings 1 Opening 2 Openings & Above *. Hogs Hair Filters are the type supplied with furnace (if supplied). APPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW To determine the approximate airflow of the unit with a filter in place, follow the steps below: 1. Select the filter type. 2. Select the number of return air openings or calculate the return opening size in square inches to determine the proper filter pressure drop. 3. Determine the External System Static Pressure (ESP) without the filter. 4. Select a filter pressure drop from the table based upon the number of return air openings or return air opening size and add to the ESP from Step 3 to determine the total system static. 5. If total system static matches a ESP value in the airflow table (i.e. 0.20, 0.60, etc,) the system airflow corresponds to the intersection of the ESP column and Model/ Blower Speed row. 6. If the total system static falls between ESP values in the table (i.e. 0.58, 0.75, etc.), the static pressure may be rounded to the nearest value in the table determining the airflow using Step 5 or calculate the airflow by using the following example. Example: For a 130,000 Btuh furnace with 2 return openings and operating on high speed blower, it is found that total system static is 0.58" w.c. To determine the system airflow, complete the following steps: 1. Obtain the airflow values at 0.50" & 0.60" ESP. 0.50": 2120 CFM 0.60": 2040 CFM 2. Subtract the 0.50" from the 0.60" to obtain airflow difference = -80 CFM 3. Subtract the total system static from 0.50" and divide this difference by the difference in ESP values in the table, 0.60" ", to obtain a percentage. ( ) / ( ) = Multiply percentage by airflow difference to obtain airflow reduction. (0.8)x(-80) = Subract airflow reduction value to 0.50" to obtain actual 0.58" ESP = Unitary Products Group

5 NEUTRALS Y W R G C HUM EAC YORK Rev. A (4/00) UNIT CLEARANCES TO COMBUSTIBLES (All surfaces identified with the unit in a vertical position) APPLICATION TOP FRONT REAR LEFT RIGHT FLOOR/ FLUE SIDE SIDE BOTTOM CLOSET ALCOVE ATTIC LINE CONTACT UPFLOW COMBUSTIBLE YES YES YES NO UPFLOW B-VENT COMBUSTIBLE YES YES YES NO HORIZONTAL COMBUSTIBLE NO YES YES YES * HORIZ. B-VENT COMBUSTIBLE NO YES YES YES * *. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal postion) of the furance jacket and building joists, studs or framing. FILTER SIZE/ADD-ON COOLING MODEL* FILTER SIZE ADD-ON COOLING SIDE BOTTOM TONS ESP * P4HUA12N x x 26 2, 2-1/2, P4HUA12N x x 26 2, 2-1/2,, P4HUA12N x x 26 2, 2-1/2, P4HUB16N x x 26 3, 3-1/2, P4HUC20N06401 (2) 16 x x /2, 4, P4HUB12N x x 26 2, 2-1/2, P4HUB16N x x 26 3, 3-1/2, P4HUC20N08001 (2) 16 x x /2, 4, P4HUC16N x x 26 3, 3-1/2, P4HUC20N09201 (2) 16 X X /2, 4, P4HUD20N10401 (2) 16 x x /2, 4, *. ESP (External Static Pressure).5 W.C. is at furnace outlet ahead of cooling coil, and does not include filter. High velocity filters provided L in model number indicates Lo NOx unit FIELD WIRING DIAGRAM L1 (HOT) N WIRING INSIDE JUNCTION BOX : BLK/BLK WHI/WHI GRN/GRN GRD WHI GRN BLK JUNCTION BOX BURNER COMPARTMENT DOOR SWITCH TRANSFORMER IGNITION MODULE COOL HEAT PARK PARK L1 XFMR CLASS 2 SYSTEM CONTROL WIRING TO THERMOSTAT BLOWER COMPARTMENT Unitary Products Group 5

6 Rev. A (4/00) YORK ACCESSORIES Propane Conversion Kit 1NP , 80 & 100 MBH 1NP , 115 & 130 MBH This accessory conversion kit may be used to convert natural gas units for propane (LP) operation. Conversion must be made by qualified distributor or dealer personnel. High Altitude Pressure Switch Kits These accessory kits may be used to convert units for high altitude operation. Conversion must be made by qualified distributor or dealer personnel. External Bottom Return Upflow or Horizontal End Return Filter Rack Provides a cleanable, high velocity type filter and rack. Attaches to the end of the furnace and provides duct flanges. 1BR /2" "A" cabinet 1BR /2" "B" cabinet 1BR " "C" cabinet 1BR /2" "D" cabinet KIT APPLICATION MODELS 1PS0301 1PS0302 1PS0312 1PS0301 1PS FT ,000 FT. 40, 60 MBH 80 MBH 100, 115, 130 MBH 40, 60, 80 MBH 100, 115, 130 MBH NOTE: For high altitude conversion, an orifice change may also be required. See Form N1.1V for application information External Side Return Filter Rack - 1SR0302 (Upflow) Provides a 16 x 25 cleanable, high velocity type filter and attaches to the furnace side panel and the return air duct.the filteris easily replaced. Package contains six filter racks with filters. 6 Unitary Products Group

7 YORK Rev. A (4/00) NOTES Unitary Products Group 7

8 NOTES Subject to change without notice. Printed in U.S.A. CD: Rev. A (4/00) Copyright by Unitary Products Group All rights reserved. Supersedes: Form TG1Y (498) Unitary 5005 Norman Products York OK Group Drive 73069